Influence of Geometric Nonlinearity in Self-Supporting Dome Roofs of Large Welded Tanks for Oil Storage

Authors

  • Facundo T. Leguizamón Pfeffer Universidad Nacional de Rosario, Facultad de Ciencias Exactas, Ingeniería y Agrimensura Instituto de Mecánica Aplicada y Estructuras (IMAE). Rosario, Argentina.
  • Horacio N. Fideleff Universidad Nacional de Rosario, Facultad de Ciencias Exactas, Ingeniería y Agrimensura Instituto de Mecánica Aplicada y Estructuras (IMAE). Rosario, Argentina.
  • Oscar Möller Universidad Nacional de Rosario, Facultad de Ciencias Exactas, Ingeniería y Agrimensura Instituto de Mecánica Aplicada y Estructuras (IMAE). Rosario, Argentina.

DOI:

https://doi.org/10.70567/mc.v41i3.18

Keywords:

Geometric nonlinearity, API-650 welded oil storage tank, Self-supporting dome roof, Shell buckling, Long-span structures

Abstract

This paper examines the influence of geometric nonlinearity on the buckling of the dome roof plate of a 50-meter-diameter, 17.5-meter-high welded oil storage tank. The tank is modeled in COMSOL Multiphysics and MITC Quadratic Lagrangian shell elements are implemented in the finite element analysis. Material linearity is assumed for the model. The loads are considered as per API-650 standard. The critical load at which the roof plate buckles is obtained from three different types of analysis: linear buckling with a linearly obtained linearization point, linear buckling with different nonlinearly obtained linearization points, and nonlinear analysis with displacement control. The results indicate that linear buckling analyses may be insufficient, not only for accurately estimating the critical load but also for identifying the regions of the structure prone to buckle, regardless of whether the linearization point was obtained through linear or nonlinear analyses.

References

API 650. American Petroleum Institute, 2021.

COMSOL, Inc., n.d. COMSOL Multiphysics®, 2023.

COMSOL. Improving Convergence of Nonlinear Stationary Models, COMSOL Articles, 2024.

Pfeffer, F., Fideleff, H., Möller, O. Optimización de la Cubierta Esférica Autoportante de un Tanque Industrial de Grandes Dimensiones, Mecánica Computacional, en prensa, 2024.

Sönnerlind, H. Buckling, When Structures Suddenly Collapse, COMSOL Blog, 2014.

Sreenath, S., Saravanan, U., Kalyanaraman, V. J Constr Steel Res 67, 1789-1796, 2011. https://doi.org/10.1016/j.jcsr.2011.05.003

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Published

2024-11-08

Issue

Vol. 41 No. 3 (2024): Structural Analysis (B)

Section

Conference Papers in MECOM 2024

License

Copyright (c) 2024 Argentine Association for Computational Mechanics

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